DOMUSA TEKNIK HDCSM User manual

INSTALLATION AND OPERATING
INSTRUCTIONS
HDCS
HDCSM
These installation and operating instructions contain all the necessary details for correctly installing and using your
appliance. Thank you for choosing a DOMUSA TEKNIK boiler.
ER-0170/1996

HYDRAULIC INSTALLATION
The boiler must be installed in a premises that complies with the requirements of current legislation.
If the boiler is on a lower level than any of the heating pipes, it is recommendable to install supply and
return taps so that the installation does not need to be drained when maintenance work is carried out.
Before making the hydraulic connection for the boiler, clean the pipes thoroughly.
Remember to provide for a filling tap connected to the heating supply or return circuit.
ELECTRICAL INSTALLATION
Ensure the home voltage is the same as that indicated on the boiler.
The electrical connections are to be made in accordance with the electrical diagrams figuring in this
manual.
We recommend you install a master switch on the power lines enabling all the supply phases to the
boiler to be cut off.
To connect the boiler at III 380 V, a neutral connection will be necessary.
STARTING UP THE BOILER
Filling the installation
Using the fill tap, slowly fill up the installation until the pressure indicated on the thermohydrometer is
between 1 and 1.5 bars.
Checking the circulation pump functioning
Unscrew the cover of the circulation pump, so that the turning shaft is visible. Connect the boiler
master switch and check the pump shaft is turning. Replace the cover.
If the shaft is not turning, disconnect the boiler master switch and use a suitably-sized screwdriver to
turn the pump shaft in both directions in order to unblock it. Connect the master switch again and
check the shaft is turning. Replace the cover.
Draining the air from the installation
Connect the boiler master switch and drain the air from the installation and the boiler, using the drain-
valves provided on the installation and boiler.
Selecting the power
The total power to the boiler may be reduced by half, using the half-power switches on the control
panel. When both switches are connected, the boiler will function at maximum power.
Selecting the temperatures
This is done using the control thermostat command on the control panel. Turn it to the right for a
higher temperature, or to the left for a lower temperature. On the HDCS and HDCSM models both the
heating temperature and the domestic hot water storage temperature can be selected. On the HDEE
and HDEEM models, only the heating temperature can be selected.
When the selected temperature is reached, it will automatically be kept constant by the thermostat.
To regulate the ambient temperature of the premises, you will need to install an ambient thermostat.
This switches off the boiler when the selected temperature is reached, and starts it up again when the
temperature drops.
The boiler is pre-wired for connection of an ambient thermostat. To do this, remove the bridge from
the connector block and connect the ambient thermostat.
Functioning with programmer (Optional)
The boiler may optionally be supplied with a time programmer, which can be fixed to the main control
panel. Both the boiler and the programmer are equipped with a quick fixing system using the 12-way
connector (X12) shown on the electrical diagram. The procedure for this is described in the
installation and operating instructions enclosed with the programmer.

DELIVERY OF THE INSTALLATION
The installer will explain to the user how the boiler works, describing all necessary points such as filling,
draining and emptying.
OBSERVATIONS
If the boiler does not start up when you have checked that the power is reaching it, the installation is
filled with water at the correct pressure, the circulation pump is turning and the thermal safety switch has
not disconnected the boiler, turn off the master switch and contact the installer.
ELECTRICAL DIAGRAMS
The boiler models described in this manual are modular type, and both the input voltage and the
maximum heating power can therefore be very easily modified.
Any modifications to power and voltage must be carried out by qualified personnel, carefully following the
instructions below:
Changing the VOLTAGE
If the network voltage is different from the voltage the boiler is designed to work with, the boiler must
be adapted accordingly. To do this, before connecting the boiler to the mains, the position of the
bridges on the connector block are to be changed as shown in the figures below.
To remove a bridge, first loosen its screws and then pull it out of its housing. To place a bridge, follow
the same procedure, in reverse order.
When the bridges are correctly in place, connect the electrical supply to the boiler as shown in the
corresponding figure. Remember it must be earthed.
O 1 R S T
N R S T
III 380 V
O 1 R S T
S R T
III 220 V
O 1 R S T
N L
II 220 V
Changing the boiler POWER
The maximum heating power of this boiler may be changed depending on your needs. To do this, simply
remove some of the bridges from the heat exchanger element, as shown in the table below.
Total power according to
model (kW) Bridges
45/90 10/15
9 15 Leave
7.5 12.5
Remove
A
6 10
Remove
A and B
4.5 -
Remove
A, B and C

CONTROL Diagram
0 1 L1 L2 L3 OO O O
BC TA
TC1
I
A
CS
P1/
2
TS1
C
2
C1C2 P1/2
I1/2
P
C
2
TC
C
1
TS
C
2
P
A
CS
C3
PC
F
7
2
3
9
8
1
5
6
4
I1/2
IC
C
2
9 10 11 125 6 7 81 2 3 4
X12
BC: Heating pump.
TA: Ambient thermostat.
F: Fuse.
X12: 12-way connector for programmer (optional).
I
C: Heating master switch.
I
ACS: Domestic hot water switch.
I
1/2: Half-power switch.
P
C: Heating pilot light.
PACS: Domestic hot water pilot light.
P
1/2: Half-power pilot light.
TC1: Domestic hot water regulation thermostat.
TS1: Domestic hot water thermal safety switch.
TC: Heating control thermostat.
TS: Heating thermal safety switch.
P: Pressure switch.
C
3: Domestic hot water contactor.
C1,C2: Heating contactors.

POWER Diagram
O 1 R S T
R1
R3
R5
R2
R4
R6
B
C
A
C1C2
P1P2
R
R
R
R
R
R
C3
A.C.S.
HEATING
C
1,C2: Heating contactors.
P
1,P2: Heating element units.
A,B,C: Bridges for changing heating power.
A.C.S.: Domestic hot water element unit.

DRAWINGS AND MEASUREMENTS
HDCS
200
160
475
110220270590600
75
835
IC
EAS IAS
RC
510
65
HDCSM
4
95
395
600
50
700
11
0
22
0
IC EA
S
IA
S
RC
VS
6
0
7
0
90
IC
3
5
RC
VS
IAS
EAS
14
0
4
5
17
5
IC: Heating supply, HDCSM 1" H, HDCS 3/4" M.
RC: Heating return, 3/4" M.
VS: Safety valve, 1/2" H.
EAS: Domestic cold water input, 1/2" M.
IAS: Domestic hot water supply, 1/2" M.

GENERAL WARRANTY CONDITIONS
DOMUSA TEKNIK guarantees the normal operation of its products in accordance with the following
conditions and periods of time, as from the date of their START-UP.
1 YEAR for electric and hydraulic elements, pumps, valves, etc.
5 YEARS for boiler shells.
5 YEARS for Hot Water Tank.
This warranty does not include those failures produced by misuse or inappropriate installation,
unsuitable energy or fuel, failures generated by feeding waters with physical-chemical characteristics
such as to produce deposits or corrosion, mishandling of the equipment and, as a general rule, anything
beyond DOMUSA TEKNIK’s control.
The warranty will be considered null and void in the following cases:
1. The boiler has been installed without meeting the laws and regulations in force regarding the
subject matter.
2. The boiler has been started up by personnel other than those authorized by DOMUSA
TEKNIK.

UK ADDRESS HEADQUARTERS & FACTORY
Unit D4 Stanlaw Abbey Business Centre, Bº San Esteban s/n
Ellesmere Port, CH65 9BF 20737 ERREZIL (Gipuzkoa)
Tel: [phone] Tel: [phone]
www.domusateknik.com
*CDOC001241*
CDOC001241 07/19